Combined gas and coal range.



C. V. ROBERTS & J. MANDBR.

COMBINED GAS AND GOAL RANGE.

APPLICATION FILED DEO'. 11, 1908.

Patented June 21,1910.

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C. V. ROBERTS & J. MANDER.

COMBINED GAS AND GOAL RANGE.

Patented June 21, 1910.

2 SHEETS-SHEET 2.

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CLARENCE V. ROBERTS AND JOI-IN MANDER, F PHILADELPHIA, PENNSYLVANIA,

ASSIGNORS IO ROBERTS & MANDER STOVE COMPANY, 0F PHILADELPHIA, PENN-SYLVANIA, A CORPORATION OF PENNSYLVANIA.

COMBINED GAS AND COAL RANGE.

Application filed December 11, 1908.

' To all whom 'it may concern:

Be it known that we, CLARENCE V. Romi'rs and JOHN MANDER, citizens ofthe United States, residing in Philadelphia, Pennsylvania, have inventedcertain Improvements in Combined Gas and Coal Ranges, of which thefollowing is a specilication.

At the price at which gas is furnished in most communities it is aseconomical as coal for cooking purposes at all seasons of the year, andfor heating water at all times eX- cept during the winter season, but itcanno-t be relied upon for heating the kitchen during the winter monthsor for maintaining an adequate supply of hot water at such time.

The object of our invention has therefore been to provide a rangeequipped with full facilities for cooking by means of gas and alsohaving a coal fire pot which is not designed primarily for cookingpurposes but for the purpose of heating the kitchen and maintaining asupply of hot water, the range being also, by preference, provided withmeans whereby the water can be heated by gas at all times except when itis necessary to maintain a coal fire.

In the accompanying drawings-Figure 1 is a plan or top view of acombined coal and gas range constructed in accordance with ourinvention; Fig. 2 is a longitudinal vertical sect-ion of the same on theline a-a, Fig. 1; Fig. 3 is a transverse vertical section on the line 52), Fig. 1, and Fig. 4 is a plan or tow View of the base member of thefire pot structure of the range.

The gas range member of our combined structure may be of any acceptedform, that shown in the present instance having four burners 1, 2, 3 andt, an oven 5 and an oven burner 6. At one side of the gas range memberis a fire pot 7 for the use of coal, this lire pot, being, bypreference, provided with a closed top or dome 9, a fuel supply chute 10and an outlet 11 for the escape of the products of combustion, thisoutlet communicating with a smoke pipe 12 at the back of the range.

By closing the top of the fire pot and providing a fuel supply chute atthe front of the same there is no likelihood of the fuel being piled sohigh in the fire pot as to obstruct the outlet 11, since the naturaltendency is to keep the level of the fuel below Speccation of LettersPatent. Patented June 21, 1910.

Serial No. 467,086.

the level of the feed chute which may be in line with or below the levelof the outlet passage.

Around the top of the re pot is a water heating chamber 13 whichcommunicates, through a pipe 14, with the lower portion of a waterreservoir 15, that shown in the present instance being of the elevatedhorizontal type although any desired type of water reservoir may be usedin connection with the range.

The water heating chamber 13 communicates, through a pipe 16, with awater heating coil 17, located in the rear of the lire pot and above agas burner 19, whereby the coil is heated when the coal fire pot is notin use, the coil being in communication with the upper portion of thereservoir 15 through a pipe 20, whereby the same circulating systemcontains both the fire pot heating chamber 13 and the gas-heated coil17, and one set of water connections suiices for both.

The water heating coil 17 is preferably located below the top plate ofthe range, the entire area of the latter being, therefore, available forthe reception of cooking utensils, and the waste heat of the burner 19being also available for cooking purposes, if desired, when the watercoil 17 is being heated by gas.

In the drawing we have shown the outlet pipe 11 for the products ofcombustion from the lire pot 7, as located below the gas burner 19, butneither this nor the closing of the top of the fire-pot are essential toour invention, although preferred.

When the fire pot is closed at the top, the lire brick blocks 21, whichline the fire pot, cannot be introduced from above without removing theupper portion of the ire pot casing which would necessitate the breakingof the water connections with the heating chamber 13, consequently wepermit of the introduction of the blocks from the base member 22 unt-ilthe final section hasy been inserted, whereupon the removable section22a can be adjusted to position and suitably secured,

A convenient means of effecting the insertion and removal of thedetachable section 22a of the base member of the fire pot is to provideit With a pivot lug 23 at each inner corner, these pivot lugs, when thesection is in a vertical position, being applied to the adjoining fixedportions of the base member Whose inner flange has portions removed forthe purpose, the section 22a being then swung up into horizontalposition, and secured in such position by any suitable means, as forinstance by transverse bolts 24 passing through lugs 25 formed on thefixed and movable members. Any desired form of grate structure may beused in connection with the fire pot.

The casing 7 of the fire pot is exposed on all sides to the circulationof air in order to provide an eiicient air heater and as all of theproducts of combustion from the fire pot must escape over theWater-heating ring 13 at the top of the same, an equally eliicient meansof heating Water is also provided.

The air to be heated may enter the chamber surrounding the firepotthrough any suitable openings in the outer casing of the range, theheated air escaping into the room or apartment through the openings inthe top plate of the range.

We claim l. The combination of a gas range having an air and Waterheating coal fire pot disposed in an air heating chamber Which surroundssaid re pot, With a gas-heated Water coil separate from but havingconnection With the Water heater of the coal iire pot.

2. The combination of a gas range having a combined air and Waterheating coal fire potdisposed in an air heating chamber Which surroundssaid lire pot, a gas-heated Water coil separate from but communicatingWith the Water heater of the lire pot, and a reservoir communicatingboth With said water heater of the fire pot and With the gas-heated-Water coil.

3. The combination of a gas range, having an air and Water heat-ing coallire pot disposed in an air heating chamber Which surrounds said firepot, and a gas-heated Waterl coil separate from but connected to theWater heater of the coal fire pot and disposed benea'ththe ytop plate ofthe range but at a higher level than the Water heater of the coal firepot.

4. The combination of a gas range having a coal'fire pot with a smokeoutlet, and a gas-heated Water coil disposed below the top plate of therange but above the smoke outlet from the coal fire pot, whereby theheat radiated from said smoke outlet acts upon the Water coil.

In testimony whereof, We have signed our names to this specification, inthe presence of tWo subscribing Witnesses.

CLARENCE V. ROBERTS. JOHN MANDER. l/Vitnesses:

HAMILTON D. TURNER, KATE A. BEADLE.

